CN103102703B - A kind of bituminous composition and preparation method thereof - Google Patents
A kind of bituminous composition and preparation method thereof Download PDFInfo
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- CN103102703B CN103102703B CN201110353555.0A CN201110353555A CN103102703B CN 103102703 B CN103102703 B CN 103102703B CN 201110353555 A CN201110353555 A CN 201110353555A CN 103102703 B CN103102703 B CN 103102703B
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Abstract
The invention discloses a kind of bituminous composition and preparation method thereof, bituminous composition comprises matrix pitch and flash-point properties-correcting agent, and flash-point properties-correcting agent is the reaction product containing organic acid material and NaOH and/or KOH solution.Matrix pitch is heated to more than fusing point 10 ~ 100 DEG C, adds flash-point properties-correcting agent, mix and obtain bituminous composition.The preparation method of flash-point properties-correcting agent comprises: under the condition heated, carry out saponification reaction containing organic acid material and NaOH and/or KOH solution, be preferably Yatall MA containing organic acid material.Compared with prior art, the inventive method by adding low cost flash-point properties-correcting agent, can significantly improve the flash-point of pitch.
Description
Technical field
The present invention relates to a kind of bituminous composition and preparation method thereof, the particularly bituminous composition significantly improving pitch flash points and preparation method thereof.
Background technology
Flash-point is the sign of bi tumenf orr oad construction safety.Flash-point is higher, then pitch is more nonflammable in construction process, and safety coefficient is higher.In order to ensure the security of constructing, the flash-point of No. 90 bi tumenf orr oads is brought up to 245 DEG C by original 230 DEG C by the Ministry of Communications's standard-" standard specification for construction and acceptance of highway asphalt pavement enforcement manual " (JTGF4-2004), and the flash-point of No. 70 and following trade mark bi tumenf orr oad is brought up to 260 DEG C by original 230 DEG C.Increasing substantially of Hashpoint standard, causes the flash-point of a lot of bi tumenf orr oad product to be difficult to up to standard.
CN00814167.3 discloses a kind of method improving asphalt properties, relate to a kind of method that production has high flash point and low volatility asphaltic products., the mixed oil of the high point petroleum cut and crude oil that comprise initial boiling point at least 270 DEG C carries out underpressure distillation, to produce the asphaltic products. that flash-point is 265-300 DEG C.The method adds three components in crude oil vacuum distillation process, and this mode can produce certain impact to vacuum distillation process and the vacuum distillate obtained, and is therefore of limited application.
CN02827978.6 discloses a kind of batch process for preparing of high flash point pitch, comprises and joins in batch still by coal tar; Add the intermediate liquid state of hot coal tar to viscid bitumen; Keep the medium temperature of viscid bitumen at maintenance level; And introduce jet flow stream, keep the temperature of coal tar substantially at maintenance level simultaneously.The method can produce the pitch that flash-point exceedes about 270 DEG C, but needs three components coal tar, by the restriction of raw material sources.
Above-mentioned existing method cannot be applicable to existing asphalt production device because of the raising of asphaltic products. standard, and can not produce the problem of qualified product.
Summary of the invention
For the problem that existing road petroleum pitch flash-point can not be up to standard, the invention provides one and significantly improve pitch flash points bituminous composition and preparation method thereof.
Bituminous composition of the present invention comprises matrix pitch and flash-point properties-correcting agent, flash-point properties-correcting agent is the reaction product containing organic acid material and NaOH and/or KOH solution, containing can contain in organic acid material in the saturated fatty acid of C9 ~ C18, oleic acid, linolic acid, sylvic acid and Yatall MA one or more.
In bituminous composition of the present invention, matrix pitch can be asphalt stock or the residual oil raw material of any character as required, and as No. 70 pitches, No. 90 pitches etc., the production method of matrix pitch is well known to those skilled in the art.
In bituminous composition of the present invention, the consumption of flash-point properties-correcting agent is generally 0.2% ~ 7% of matrix pitch quality, is preferably 1% ~ 5%, and concrete consumption can need the amplitude improving flash-point specifically to determine according to matrix pitch.
In bituminous composition of the present invention, the additive that other is conventional can be added as required, as one or more in antiaging agent, tackifier, toughner etc.
In bituminous composition of the present invention, can be various source containing organic acid material, what preferably value was lower contains organic acid material, and the Yatall MA most preferably extracted from alkaline process wood pulp raffinate can be crude tall oil, also can be refining Yatall MA.
The preparation method of bituminous composition of the present invention, is heated to more than fusing point 10 ~ 100 DEG C, adds flash-point properties-correcting agent, mix by matrix pitch.
In bituminous composition of the present invention, the preparation method of flash-point properties-correcting agent is as follows: under the condition heated, carry out saponification reaction containing organic acid material and NaOH and/or KOH solution, reaction product is flash-point properties-correcting agent.Temperature of reaction is generally 80 DEG C ~ 200 DEG C, and be preferably 100 ~ 150 DEG C, the reaction times is generally 10 ~ 120min.The mass concentration of NaOH and/or KOH solution can be 10% to saturated solution, and the weight ratio containing organic acid material and NaOH and/or KOH is 5:1 ~ 30:1.Saponification reaction is generally NaOH and/or KOH solution are added to react containing in organic acid material, and reaction process generally needs to carry out under agitation.
In bituminous composition of the present invention, by adding a small amount of flash-point properties-correcting agent, can increase substantially the flash-point value of asphaltic products., do not affect other character of asphaltic products., properties-correcting agent cost is low, and flash-point value improves significantly, generally can improve flash-point more than 30 DEG C.
The preparation method of bituminous composition of the present invention is simple, and the preparation of flash-point properties-correcting agent is simple, and cost is low, and raw material sources are extensive, with a wide range of applications.Concerning existing asphalt production device, do not need to do any change, just can produce the asphaltic products. meeting new standard.
Embodiment
The present invention is directed to the problem that a lot of bi tumenf orr oad flash-point can not be up to standard, provide one and significantly improve pitch flash points bituminous composition and preparation method thereof, preparation method improves, avoids fat saponification reaction and generate the disadvantageous effect of the by product such as glycerine to pitch and building stones adhesivity, bitumen ductility.
Listed embodiment is the object further illustrated, and improve material of pitch flash points and preparation method thereof and be not limited in described in embodiment, organic acid substance comprises saturated fatty acid, oleic acid, linolic acid and sylvic acid etc.The object of concentration only for further illustrating of the carboxylic-acid in embodiment and the material ratio of bases and NaOH/KOH solution, specifically adjusts according to the difference of raw material type, purity and concentration.
Embodiment 1
The crude tall oil 283.4g that certain alkaline process wood pulp raffinate extracts, 50%(quality) NaOH solution 40g, Yatall MA and NaOH mass ratio 14.2:1.Under 120 DEG C ± 5 DEG C conditions, the NaOH solution of above-mentioned weight is added dropwise in above-mentioned crude tall oil, titration time 10min, after titration completes, stirs 1h at the same temperature, the material of pitch flash points must be improved.
Add the material synthesized in a small amount of above-described embodiment in certain 70# petroleum pitch and certain vacuum residuum, its flash-point significantly improves, and the results are shown in Table 1.Result shows, this synthetic other characteristics influence to asphaltic products. is not obvious.
table 1 reaction product is on the impact of pitch and residual oil character
| Material | Flash-point, DEG C | Penetration degree, 0.1mm | Softening temperature, DEG C | 10 DEG C of ductilities, cm |
| No. 70 pitches | 241 | 73 | 53.4 | >150 |
| No. 70 pitch+0.8%(quality) embodiment 1 product | 266 | 70 | 54.3 | >150 |
| Certain vacuum residuum | 228 | 156 | — | — |
| Certain vacuum residuum+0.8%(quality) embodiment 1 product | 261 | 149 | — | — |
Embodiment 2
The crude tall oil 600g that certain alkaline process wood pulp raffinate extracts, 20%(quality) NaOH solution 100g, under 100 DEG C ± 5 DEG C conditions, the NaOH solution of above-mentioned weight is dripped in above-mentioned Yatall MA, titration time 30min, stirs 120min after titration completes, must improve the material of pitch flash points.
Add the material synthesized in a small amount of above-described embodiment in certain 70# petroleum pitch and certain vacuum residuum, its flash-point significantly improves, and the results are shown in Table 2.Result shows, this synthetic other characteristics influence to asphaltic products. is not obvious.
table 2 reaction product is on the impact of pitch and residual oil character
| Material | Flash-point, DEG C | Penetration degree, 0.1mm | Softening temperature, DEG C | 10 DEG C of ductilities, cm |
| No. 70 pitches | 241 | 73 | 53.4 | >150 |
| No. 70 pitch+2%(quality) embodiment 1 product | 272 | 71 | 56.2 | 80 |
| Certain vacuum residuum | 228 | 156 | — | — |
| Certain vacuum residuum+2%(quality) embodiment 1 product | 267 | 143 | — | — |
As can be seen from table 1 and table 2 result, bituminous composition of the present invention effectively can improve flash-point, not obvious to other Index Influence.
Claims (7)
1. a bituminous composition, it is characterized in that: bituminous composition comprises matrix pitch and flash-point properties-correcting agent, flash-point properties-correcting agent is the reaction product containing organic acid material and NaOH and/or KOH solution, containing the saturated fatty acid containing C9 ~ C18 in organic acid material, oleic acid, linolic acid, one or more in sylvic acid and Yatall MA, weight ratio containing organic acid material and NaOH and/or KOH is 14.2:1 ~ 30:1, under the condition heated, saponification reaction is carried out containing organic acid material and NaOH and/or KOH solution, saponification reaction temperature is 80 DEG C ~ 100 DEG C, the consumption of flash-point properties-correcting agent is 0.2% ~ 7% of matrix pitch quality, the mass concentration of NaOH and/or KOH solution is 10% to saturated solution.
2. according to bituminous composition according to claim 1, it is characterized in that: matrix pitch is asphalt stock or residual oil raw material.
3. according to the bituminous composition described in claim 1 or 2, it is characterized in that: matrix pitch is No. 70 pitches or No. 90 pitches.
4. according to bituminous composition according to claim 1, it is characterized in that: the consumption of flash-point properties-correcting agent is 1% ~ 5% of matrix pitch quality.
5. according to bituminous composition according to claim 1, it is characterized in that: containing one or more in antiaging agent, tackifier and toughner in bituminous composition.
6. the preparation method of bituminous composition described in a claim 1, it is characterized in that: the preparation method of this bituminous composition, matrix pitch is heated to more than fusing point 10 ~ 100 DEG C, add flash-point properties-correcting agent, mix and obtain bituminous composition, under the condition heated, carry out saponification reaction containing organic acid material and NaOH and/or KOH solution, reaction product is flash-point properties-correcting agent, and the weight ratio containing organic acid material and NaOH and/or KOH is 14.2:1 ~ 30:1.
7. in accordance with the method for claim 6, it is characterized in that: saponification reaction NaOH and/or KOH solution is added to react containing in organic acid material, and reaction process needs to carry out under agitation.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3186234A1 (en) | 2014-08-29 | 2017-07-05 | Iowa State University Research Foundation, Inc. | Improved asphalt products and materials and methods of producing them |
| US10961395B2 (en) | 2016-02-29 | 2021-03-30 | Iowa State University Research Foundation, Inc. | Rejuvenation of vacuum tower bottoms through bio-derived materials |
| US10570286B2 (en) | 2016-08-30 | 2020-02-25 | Iowa State University Research Foundation, Inc. | Asphalt products and methods of producing them for rejuvenation and softening of asphalt |
| US11773265B2 (en) | 2019-09-18 | 2023-10-03 | Iowa State University Research Foundation, Inc. | Biosolvents useful for improved asphalt products utilizing recycled asphalt pavement or other brittle asphalt binders such as vacuum tower bottom |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4874432A (en) * | 1988-06-27 | 1989-10-17 | Asphalt Materials, Inc. | Multigrade asphalt cement product and process |
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| US5437717A (en) * | 1994-06-13 | 1995-08-01 | Vinzoyl Petroleum Co. | Asphalt compositions with improved cross-linking agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4874432A (en) * | 1988-06-27 | 1989-10-17 | Asphalt Materials, Inc. | Multigrade asphalt cement product and process |
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